On October 20 2010 11:36 Edowyth wrote:
[quote]

The interesting thing no one has mentioned is that j (i, whatever) _isn't a number_! It's actually a constant (ie a name for a specific value). Saying it is a number is equivalent to me saying that MAX_INT is a number...because, after all, MAX_INT = 2^31 - 1...

z = x + iy is called a number, so z = 0 + 1i = i would be a number. That's the complex analysis treatment anyway, not sure about engineering.

nope...z is representative of a complex number....a real number plus a real number times the square root of negative one: z is a NAME not a number it's like saying a box is a space: A box contains a space, it can be thought of as representative of the space it contains; however it is not a space.

Where are you even getting this from? I just checked my textbook and none of what you're saying is in there.

THINK about it...you're a person...named (presumably) Jalstar. Jalstar is not a person...it's a NAME. The physical body everyone knows as Jalstar is a person....yet 'Jalstar' isn't. It's not that hard a concept. Drop the diff eq book and read about the difference between a pointer and an object...a variable and a value...a constant and the value it represents.

Complex Analysis book, and it's not uncommon at all for math, computer science, and physics to have different approaches to the same things.

Just checked a few more textbooks as well as Wikipedia and universal consensus seems to be that i is a number. It's your word against the world's.

No it's not...my complex book says i is a number too: it's talking about (-1)^(1/2) whereas I'm talking about the difference between that and the character drawn with a vertical line below a small dot with a little bit of space.

Is Pi a number? Or is it representative of 3.14159...?

And it seems you believe that texts are always correct: wow, I love that the sun circles the earth.

Lol this is ridiculous. i is a representation of a number. In the same way you would say "Edowyth is a person" you would say "i is a number." Stop being overly philosophical and in-depth on something that is completely irrelevant. If you talk to anyone who has ever done complex analysis and say "oh yeah thats just 4i" They will know what you mean. Similarly, if you say "oh that circle? It has circumference 7pi" they will know you mean 7*3.14....

Yes it's a label technically, but in common usage everyone knows you mean the number. So please end this debate lol.

It's not ridiculous...you think about these things as the concepts that they are and you are empowered so much more than if you are just manipulating symbols. Tell a philosopher, or a preacher, that NAMES DON'T MATTER and you'll see that they do to many.

"i" is simply a number represented by the label "i". Correct. Does that make you feel empowered? Really? When you realised that "john" is simply a person represented by the label "john" did you sit and mull over that, striking your best philosophical stance? Probably not. It's really not that "deep" or "empowering". What IS empowering, is using this number - and others like it - to work out interesting problems. What you may find "empowering" others realise without any form of care. It is just another name. Names, in mathematics, a scientific subject, bear no relevance but to represent numbers or concepts. How you use those numbers and concepts is what is interesting, not what they are called.

AND THAT'S WHAT'S EMPOWERING! It's what the thing _is_ that matters (its relationship to other things, the properties that define it, what makes it unique [if anything], etc), not what we call it.

The philosopher of course takes the opposite point: Names define the way we _think_ about the concept represented by the name...or the other way around. Regardless, there is a significant amount of knowledge to be gained just _considering_ the difference between a name and its representative.

So...I'm done trying to make various people get this: j isn't a number though it typically is used as a name for (-1)^(1/2) which is a number (though more typically in engineering than mathematics).

Wodger

Scotland380 Posts

October 20 2010 03:53 GMT

#12783

10/19 Day[9] Daily #0201 Starcraft 2 Newbie Tuesday: Using Drops (Blip.tv)
10/19 Day[9] Daily #0200 Starcraft 2 Funday Monday: Alphabetical Free For All (Blip.tv)

Radruler

United States2 Posts

October 20 2010 03:55 GMT

#12784

On October 20 2010 12:53 Wodger wrote:
10/19 Day[9] Daily #0200 Starcraft 2 Funday Monday: Alphabetical Free For All (Blip.tv)

That was insanely fast! One of the best dailies so far for sure, FundayMonday is turning out to be an awesome tradition.

The J joke was so overused in every chat though, esp. chat1. =/

clm100

United States18 Posts

October 20 2010 04:05 GMT

#12785

What's newbie tuesday for next week?

ScarletKnight

United States691 Posts

October 20 2010 04:08 GMT

#12786

The J joke was so overused in every chat though, esp. chat1. =/

Yeah at this point it's not funny anymore.

fantomex

United States313 Posts

October 20 2010 04:08 GMT

#12787

I didn't understand the rules from last week. I thought we only had to kill them in the correct order. It made for much more exciting FFAs.

BigfootCommentaries

8 Posts

October 20 2010 04:13 GMT

#12788

On October 20 2010 12:47 RommelTJ wrote:

Show nested quote +

...aaand I have a new computer wallpaper.

Gravebait

United States13 Posts

October 20 2010 04:15 GMT

#12789

Perhaps nearly every post I make extols the ballerality of Day9, but.. god damn you're a total fucking baller. I don't understand how you're so funny every single time. Grats on 200!

IceTwenty

United States1 Post

October 20 2010 04:18 GMT

#12790

clm - next week's Newbie Tuesday is "losing to Protoss because they had Colossi in their army comp."

Anyway, so psyched that the Funday Monday is the mono-unit team games again, I had so much fun doing those (even though I didn't end up sending in any replays). Anyone wanna hop on and do a Muta/Medi/Zealot rush or something? =D

TheGrimace

United States929 Posts

October 20 2010 04:26 GMT

#12791

I was watching the chat while looking for the song on the Day9 Playlist from day9fan.com, but I couldn't find the song. I even tried to identify it using Midomi as I normally would, but nothing popped up. What was the second to last song he played after Daily 201? If anyone can tell me, I'll be a very happy man.

Ulmon

United States3 Posts

October 20 2010 04:29 GMT

#12792

Can someone link me to when the "J" hilarity occurred

Duscha

Germany42 Posts

October 20 2010 04:59 GMT

#12793

On October 20 2010 13:26 TheGrimace wrote:
I was watching the chat while looking for the song on the Day9 Playlist from day9fan.com, but I couldn't find the song. I even tried to identify it using Midomi as I normally would, but nothing popped up. What was the second to last song he played after Daily 201? If anyone can tell me, I'll be a very happy man.

# (D9D#201) Trentemoller - Always Something Better
# (D9D#201) U-Na - Murcof
# (D9D#201) Frank Klepacki - C&C Thang
# (D9D#201) Maid of Gold - Villain Accelerate

Should be one of those. For further info check out http://day9fan.com/day9playlist

nvs.

Canada3609 Posts

October 20 2010 05:04 GMT

#12794

Wow that funday monday was soooo worth waiting the extra 24 hours for. <3

silencesc

United States464 Posts

October 20 2010 05:35 GMT

#12795